Floor through-passage molding apparatus and constricting module thereof

ABSTRACT

The present invention provides a floor through-passage molding apparatus adapted for a floor construction having steel bars, includes: a forming sleeve and a constricting module. Said forming sleeve has a sleeve wall forming an outer circumference surface. Said constricting module has an elongated curved body disposed on said sleeve wall, and a first connection terminal and a second connection terminal are respectively located on two opposite ends of said elongated curved body. By connection of said first connection terminal with the second connection, said elongated curved body can radially support outer the circumference surface of the sleeve wall to reinforce the entire structure of the forming sleeve and thereby prevent the floor through-passage molding apparatus from deforming or slanting, and simultaneously reinforce a firm connectivity between the floor through-passage molding apparatus and the concrete floor.

FIELD OF THE INVENTION

The present invention relates to a floor through-passage molding apparatus and constricting module thereof, and especially to, a floor through-passage molding apparatus in which a constricting module is employed to reinforce the entire structure of the apparatus.

BACKGROUND OF THE INVENTION

Nowadays, in a large building construction such as a manufactory construction, it is essential to adopt a through-passage forming apparatus or a molding apparatus so as to reserve a space required for each through-passage in a concrete floor. After poured into a circumambiency of the through-passage forming apparatus or molding apparatus, the concrete is set to form each concrete floor and its through passages treated as vents, supplying-water pipes or cable passageways. Earlier through-passage forming apparatus or molding apparatus is a mere hollow standing sleeve. However, a bearing capacity of the current manufactory floor needs higher so that a thickness of the concrete floor is thickened and a length of the through passage is elongated. This revokes the through-passage forming apparatus or molding apparatus such as the standing sleeve heightened and its stressed region widened against the concrete. To avoid an impact from a huge amount of poured concrete from oppressing the through-passage forming apparatus or molding apparatus to deform, even from damaging formation of the through passage, several conventional through-passage forming apparatuses or molding apparatuses, e.g. a Japanese Utility Model Publication No. H5-32586, a Japanese Patent Publication No. H11-81663 and a Japanese Patent Publication No. 2000-145142, have provided various improved technical solutions each of which structurally and primarily has an upper cover, a lower cover, a hollow standing sleeve and a long rod-like retaining assembly. For conveniently understanding, FIG. 1 illustrates an exemplar upon the Japanese Patent Publication No. 2000-145142 and is explained as following: a hollow standing sleeve 5 has an upper opening and a lower opening both communicated with a hollow space thereof, wherein the lower cover 2 and the upper cover 4 both are formed with an aperture or an inner-threaded hole on a central position thereof. In assembly, the long rod-like retaining assembly 3 could be accommodated within the hollow space of the standing sleeve 5. The upper cover 4 is used to cover the upper opening of the standing sleeve 5 and the lower cover 2 is used to cover the lower opening of the standing sleeve 5. Then, by threads and/or an additional nut located on two ends of the long rod-like retaining assembly 3, the two opposite ends of long rod-like retaining assembly 3 are respectively up-and-down screwed to the upper and lower cover 4, 2. This leads the lower cover 2, the upper cover 4 and the standing sleeve 5 triple to be integrated, firmly. To restrict the through-passage forming apparatus or molding apparatus within a specific position on the concrete floor, the through-passage forming apparatus or molding apparatus is joined in vertical direction relative to a horizontal construction molding of the concrete floor by its lower cover or the end of the retaining assembly. However, under a factual construction, the concrete would principally impact the through-passage forming apparatus or molding apparatus along a horizontal direction relative to the apparatus when poured. If the through-passage forming apparatus or molding apparatus is infirmly fastened on the horizontal construction molding of the concrete floor, the impact of the being-poured concrete very readily slants the through-passage forming apparatus or molding apparatus, whereby the through passages may be deformed or damaged after the concrete floor is set-to-formed.

Additionally, the upper cover, the lower cover and the retaining assembly would be stripped and removed from said through-passage forming apparatus or molding apparatus after formation of the concrete floor, except for only the standing sleeve which is reserved within the through passage of the concrete floor so that a firm connection between the standing sleeve and the concrete floor could not be always ensured. For example, the concrete floor might compress the standing sleeve since stressed under the construction.

Accordingly, it is essential to develop a through-passage molding apparatus capable of reinforcing its entire structure so as to resolve the aforementioned problem.

SUMMARY OF THE INVENTION

To eliminate the drawbacks of the aforementioned prior art, a primary objective of the present invention is to provide a floor through-passage molding apparatus which reinforces the entire structure thereof by a constricting module, whereby during a process of forming a concrete floor through passage, a higher impact-resisting capacity is provided to prevent the floor through-passage molding apparatus from being deformed or slanted.

Besides, a secondary objective of the present invention is to provide a floor through-passage molding apparatus and a constricting module thereof. After forming a concrete floor through passage, said constricting module is capable of reinforcing a firm connection between the floor through-passage molding apparatus and the concrete floor.

To achieve the aforementioned invention objective, a preferred embodiment of the present invention provides a floor through-passage molding apparatus adapted for a floor construction having steel bars, which primarily and structurally comprises a forming sleeve and a constricting module.

Said forming sleeve has a sleeve wall forming an outer circumference surface thereon and defined with a channel, a first opening and a second opening. The first opening and the second opening are respectively located two opposite ends of said forming sleeve and communicated with each other via said channel.

Said constricting module has a plurality of separable short curved body and a plural pairs of fastener assemblies. In this embodiment, said plurality of separable short curved bodies are progressively assembled in an annular arrangement along the outer circumference surface of said sleeve wall, wherein a radian of each of the short curved bodies is set between 0 and 2π, e.g. π/2, 2π/3 or π and so on, and each of the short curved bodies is integrally formed with a first connection terminal and a second connection terminal both which are respectively radially connected to two opposite ends of said short curved body and respectively defined with a cavity. In this annular arrangement, by connection of the second connection terminal of each of the short curved bodies with the first connection terminal of its neighbor short curved body, said plurality of short curved bodies are cascaded one by one into an elongated curved body along an adjustable radian until the first connection terminal and the second connection terminal on the two ends of the elongated curved body approach with each other for further building up a connection therebetween. To connect the second connection terminal of each of the short curved bodies with the first connection terminal of its neighbor short curved body, a pair of corresponding fastener assembly is utilized to be jointed with the cavities of said first connection terminal and said second connection terminal. Said pair of fastener assembly includes a bolt and a nut. By way of the bolt passing through the cavity of each of the first connection terminal and second connection terminal to screw on the nut, the second connection terminal of each of the short curved bodies is connected with the first connection terminal of its neighbor short curved body. The elongated curved body in which said plurality of short curved bodies are cascaded, is a deformable elastomer with an adjustable radian and thereby capable of extending along the outer circumference surface of the sleeve wall until the first connection terminal and the second connection terminal on the two ends of the elongated curved body approach with each other. Finally, by jointing the corresponding fastener assembly to the cavities of first connection terminal and the second connection terminal on the two ends of the elongated curved body, said elongated curved body can radially supports the outer circumference surface of the sleeve wall.

In another embodiment, said elongated curved body, the first connection terminal and the second connection terminal are made in integral, wherein said first connection terminal and the second connection terminal are radially connected to the two opposite ends of said elongated curved body. The constricting module according to the present invention can greatly reinforce the entire structure of the floor through-passage molding apparatus such as a forming sleeve and thereby provides a higher impact resistance during a process of forming the concrete floor through passage, and especially in a horizontal direction where the being-poured concrete impacts, and can prevent the floor through-passage molding apparatus from deforming or slanting.

In another embodiment, at least one of the short curved bodies in said elongated curved body further has a third connection terminal for connecting to the steel bars of said floor construction. After the forming process of the concrete floor through passage, said constricting module can reinforce a firm connection between the floor through-passage molding apparatus and the concrete floor. At least one of the short curved bodies in said elongated curved body further has a fourth connection terminal for connecting to the sleeve wall of said forming sleeve.

In another embodiment, said elongated curved body, the first connection terminal and the second connection terminal are made in integral, wherein said elongated curved body can have a third connection terminal for connecting to the steel bars of said floor construction, and a fourth connection terminal for connecting to the sleeve wall of said forming sleeve.

In another embodiment, the present invention provides a floor through-passage molding apparatus adapted for a floor construction having steel bars, which primarily and structurally comprises a upper cover, a lower cover, a forming sleeve, a long rod-like retaining assembly and a constricting module, wherein said forming sleeve has a sleeve wall outwardly forming an outer circumference surface and defined with a hollow channel, a first opening and a second opening. The first opening and the second opening are communicated with each other via said channel. Said long rod-like retaining assembly is accommodated within the channel of said forming sleeve. The upper cover is used to cover the first opening of the forming sleeve and the lower cover is used to cover the second opening of the forming sleeve, wherein two opposite ends of the long rod-like retaining assembly are respectively up-and-down screwed to the upper and lower cover so that the lower cover, the upper cover and the forming sleeve triple provides the floor through-passage molding apparatus with a firm combination in a vertical direction. Said constricting module can utilize the same as various constricting modules of the above-mentioned embodiments and provide the floor through-passage molding apparatus with a firm combination in a horizontal direction.

To explicitly realize the aforementioned context of the present invention, the following paragraphs citing various preferred embodiments by reference to the following detailed description, when taken in conjunction with the accompanying drawings as followings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 depicts a cross-sectional view diagram of a conventional floor through-passage molding apparatus.

FIG. 2 a depicts a component-exploded diagram of a floor through-passage molding apparatus according to a first preferred embodiment of the present invention.

FIG. 2 b depicts an assembled solid diagram of the floor through-passage molding apparatus according to the first preferred embodiment of the present invention.

FIG. 3 a depicts a lateral-view diagram of a constricting module of the floor through-passage molding apparatus according to the first preferred embodiment of the present invention.

FIG. 3 b depicts a top-view diagram of the constricting module of the floor through-passage molding apparatus according to the first preferred embodiment of the present invention.

FIG. 4 a depicts a lateral-view diagram of a constricting module of a floor through-passage molding apparatus according to a second preferred embodiment of the present invention.

FIG. 4 b depicts a top-view diagram of the constricting module of the floor through-passage molding apparatus according to the second preferred embodiment of the present invention.

FIG. 5 a depicts a lateral-view diagram of a constricting module of a floor through-passage molding apparatus according to a third preferred embodiment of the present invention.

FIG. 5 b depicts a top-view diagram of the constricting module of the floor through-passage molding apparatus according to the third preferred embodiment of the present invention.

FIG. 6 a depicts a lateral-view diagram of a constricting module of a floor through-passage molding apparatus according to a fourth preferred embodiment of the present invention.

FIG. 6 b depicts a top-view diagram of the constricting module of the floor through-passage molding apparatus according to the fourth preferred embodiment of the present invention.

FIG. 7 depicts a cross-sectional view diagram of a floor through-passage molding apparatus according to a fifth preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

In order to make the illustration of the present invention more explicit and complete, the following description is stated with reference to illustrations of different figures where the same numeral reference is used to denote the same or similar component.

FIG. 2 a depicts a floor through-passage molding apparatus 10 according to a first preferred embodiment of the present invention adapted for a floor construction having steel bars, which primarily and structurally comprises: a forming sleeve 100 and a constricting module 110.

Said forming sleeve 100 can be made of various types of metallic or plastic material and embedded within the floor construction having the steel bars and the concrete structure. By pouring the concrete to a circumambiency of the forming sleeve 100, the concrete after set will forms through passages each which is treated as vents, supplying-water pipes or cable passageways. Said forming sleeve 100 has a sleeve wall 102 outwardly forming an outer circumference surface 1020 and defined with a hollow channel 104, a first opening 106 and a second opening 108. Said first opening 106 and said second opening 108 are respectively located on two opposite ends of said forming sleeve 100 and communicated with each other via said channel 104. In this embodiment, the outer circumference surface 1020 of the sleeve wall 102 of said forming sleeve 100 is formed with a radian, e.g. 2π (rad).

By reference to FIGS. 2 a, 3 a and 3 b, said constricting module 110 includes four separable short curved bodies 120 and four pairs of fastener assemblies 128, wherein said four separable short curved bodies 120 assembled in an annular arrangement along outer circumference surface 1020 of said sleeve wall 102, wherein the radian of each of the short curved bodies 120 is π/2 (Arc length/radius=π/2), and each of the short curved bodies 120 is integrally formed with a first connection terminal 124 and a second connection terminal 126. Said first connection terminal 124 and said second connection terminal 126, each of which is respectively defined with a cavity 1242, 1262, are respectively radially connected to two opposite ends of said short curved body 120. Before assembled into the annular arrangement, the second connection terminal 126 of each π/2-radian short curved bodies 120 is firstly connected with the first connection terminal 124 of its neighbor π/2-radian short curved body 120 by cascade. This would constitute an elongated curved body 122 with a π radian. Next, by so on and so forth, the other two short curved bodies 120 each having π/2 radian are cascaded one by one until said four short curved bodies 120 are cascaded into an elongated curved body 122 having a 2π radian, as shown in FIG. 3 b so that the first connection terminal 124 and the second connection terminal 126 on two ends of said elongated curved body 122 having a 2π radian approach with each other for making further connection therebetween. By following the one-by-one cascades of said four short curved bodies 120 each with π/2 radian, the radian of the elongated curved body 122 is enlarged from π to 2π, as the result shown in FIG. 3 b, which makes the radian of said elongated curved body 122 becoming an adjustable-variance radian.

During a process of connecting the second connection terminal 126 of each of the short curved bodies 120 with the first connection terminal 124 of its neighbor short curved body 120, at least corresponding one pair of fastener assemblies 128 is utilized to be jointed with the cavities 1242, 1262 of the first connection terminal 124 and the second connection terminal 126 of each of the short curved bodies 120 for the oncoming connections. In this embodiment, said each pair of fastener assembly 128 includes a bolt 1282 and a nut 1284. The bolt 1282 is adapted to pass through the cavities 1262, 1242 on the second connection terminal 126 of one of the short curved bodies 120 and the first connection terminal 124 of its neighbor short curved body 120, and then being screwed on the nut 1284. However, for another application, the connection of the second connection terminal 126 of each of the short curved bodies 120 with the first connection terminal 124 of its neighbor short curved body 120 also can adopt the other approach such as a soldering process but is not limited to usage of a fastener assembly 128. Said fastener assembly 128 is not limited to the bolt 1282 and the nut 1284 either. Any one technology capable of retaining the second connection terminal 126 of each of the short curved bodies 120 to the first connection terminal 124 of its neighbor short curved body 120 also can be adopted.

In a factual assembly as shown in FIG. 2 b, said four short curved bodies 120 can be cascaded one by one to constitute the elongated curved body 122, except that the last-rest short curved body 120 and its neighbor short curved body 120. The second connection terminal 126 of the last-rest short curved body 120 and the first connection terminal 124 of its neighbor short curved body 120 are not connected with each other in a temporary manner. Thus, a gap is formed between the first connection terminal 124 and the second connection terminal 126 on the two ends of the elongated curved body 122 to allow the pass through of the forming sleeve 100. This will bring the convenience for the floor construction workers. This will lead the elongated curved body 122 to put around the outer circumference surface 1020 of the sleeve wall 102 of the forming sleeve 100. That is because each of the short curved bodies 120 is made of a deformable elastomer such as a metallic material. Therefore, the cascaded elongated curved body also will be a deformable elastomer to provide the floor construction workers with a convenience of enlarging the gap of the elongated curved body 122 so as to put around the forming sleeve 100. After the elongated curved body 122 is put around the forming sleeve 100, the radian of the elongated curved body 122 is larger than the radian of each of the short curved bodies 120 but may be identical to or smaller than the radian (e.g. 2π) of the outer circumference surface 1020 of the sleeve wall 102. This makes the first connection terminal 124 and the second connection terminal 126 on the two ends of the elongated curved body 122 approaching with each other. At this moment, the floor construction workers can utilize a screwed joint among the cavities 1242 1262 of the first and second connection terminals 124, 126 on the two ends of the elongated curved body 122 and the corresponding fastener assembly 128 to accomplish said elongated curved body 122. Thus, said elongated curved body 122 completely surrounds the outer circumference surface 1020 of the sleeve wall 102, finally and thereby provides radial supporting forces for supporting the outer circumference surface 1020 of the sleeve wall 102. By the radial supports of the constricting module 110, the entire structure of the forming sleeve 100 can be greatly reinforced during the processing of forming the through passage 162 of the concrete floor 160, especially in a horizontal direction where the being-poured concrete impacts, and therefore provide a higher impact-resistance capacity to prevent the forming sleeve 100 from deforming or slanting. After the concrete on the circumambiency of the forming sleeve 100 is set to form the through passages 162, the forming sleeve 100 and the constricting module 110 are embedded together within the concrete floor 160 without being stripped therefrom so as to increase a connective degree between the forming sleeve 100 and the concrete floor 160.

In another embodiment as shown in FIG. 2 b, said first or second connection terminal 124, 126 of any one of the short curved bodies 120 positioned on the outer circumference surface 1020 of the forming sleeve 100 can be disposed or formed with a third connection terminal such as a soldering spot (not shown) for connecting to the steel bars 164 in the concrete floor 160 beside any one side of the forming sleeve 100. Thus, after the through passage 162 of the concrete floor 160 is formed, by connection of the constricting module 110 to the steel bars 164, the firm connectivity between the forming sleeve 100 of the floor through-passage molding apparatus 10 and the concrete floor 160 can be more reinforced.

In another embodiment as shown in FIG. 2 b, any one of the short curved bodies 120 on the outer circumference surface 1020 of the forming sleeve 100 can be disposed or formed with a fourth connection terminal (not shown) such as a soldering spot or an jointing spot. The soldering spot can connect to the sleeve wall 102 of said forming sleeve 100. The jointing spot is integrally formed with the sleeve wall 102 of the forming sleeve 100. Then the short curved body 120 having the fourth connection terminal is cascaded with the other short curved bodies 120 to constitute the elongated curved body 122. Thus, the elongated curved body 122 can surround the outer circumference surface 1020 of the forming sleeve 100 for convenience of the floor construction workers assembling. Simultaneously, this can make a tighter connectivity between the constricting module 110 and the forming sleeve 100 of the floor through-passage molding apparatus 10.

FIGS. 4 a and 4 b depict a constricting module 210 of a floor through-passage molding apparatus according to a second preferred embodiment of the present invention adapted for a floor construction having steel bars and the concretes, which are differed from the constricting module 110 shown in FIG. 3 b as following: the constricting module 210 depicted in FIGS. 4 a and 4 b includes three short curved bodies 220 and three pairs of fastener assemblies 228, wherein said three short curved bodies 220 each having 2π/3 radian are assembled into an elongated curved body 222. Since the rest components are identical with the constricting module 110 shown in FIG. 3 b in structure and function, these are omitted hereinafter.

FIGS. 5 a and 5 b depict a constricting module 310 of a floor through-passage molding apparatus according to a third preferred embodiment of the present invention adapted for a floor construction having steel bars and the concretes, which are differed from the constricting module 110 shown in FIG. 3 b as following: the constricting module 310 depicted in FIGS. 5 a and 5 b includes two short curved bodies 320 and two pairs of fastener assemblies 328, wherein said two short curved bodies 320 each having π radian are assembled into an elongated curved body 322. Since the rest components are identical with the constricting module 110 shown in FIG. 3 b in structure and function, these are omitted hereinafter.

The radian of the short curved body of the constricting module of the present invention can be set between 0 and 2π (0<radian<2π), and the radian of said plurality of short curved bodies can be different with each other. It is acceptable that just the radian of the final-cascaded elongated curved body approaches 2π.

FIGS. 6 a and 6 b depict a constricting module 410 of a floor through-passage molding apparatus according to a fourth preferred embodiment of the present invention adapted for a floor construction having steel bars and the concretes, which are differed from the constricting module 110 shown in FIG. 3 b as following: an elongated curved body 422, a first connection terminal 424 and a second connection terminal 426 of the constricting module 410 depicted FIGS. 6 a and 6 b are made in integral, and the first connection terminal 424 and the second connection terminal 426 only use a pair of fastener assembly 428 (including a bolt and a nut) for connection therebetween. This makes the radian of the elongated curved body 422 identical to or smaller than 2π. Since the rest components are identical with the constricting module 110 shown in FIG. 3 b in structure and function, these are omitted hereinafter.

In another embodiment, said elongated curved body 422 can be disposed or formed with a third connection terminal such as a soldering spot (not shown) for connecting to the steel bars 164 in the concrete floor 160 as shown in FIG. 2 b. Under the utilization, after the through passage 162 of the concrete floor 160 is formed, by connection of the constricting module 410 to the steel bars 164, the firm connectivity between the forming sleeve of the floor through-passage molding apparatus and the concrete floor 160 can be more reinforced.

In another embodiment, said elongated curved body 422 can be disposed or formed with a fourth connection terminal (not shown) such as a soldering spot for connecting to the sleeve wall 102 of said forming sleeve 100 or an jointing spot integrally formed with the sleeve wall 102 of the forming sleeve 100 as shown in FIG. 2 b. This makes a tighter connectivity between the constricting module 410 and the forming sleeve of the floor through-passage molding apparatus.

FIG. 7 depicts a floor through-passage molding apparatus 60 according to a fifth preferred embodiment of the present invention adapted for a concrete floor 160 having steel bars 164, which primarily and structurally comprises: an upper cover 62, a lower cover 64, a forming sleeve 66, a long rod-like retaining assembly 68 and a constricting module 70, wherein said forming sleeve 66 has a sleeve wall 602 outwardly forming an outer circumference surface 6020 and defined with a hollow channel 604, a first opening 606 and a second opening 608. The first opening 606 and the second opening 608 are respectively located on two opposite ends of said forming sleeve 66 and communicated with each other via said channel 604. Said upper cover 62 and lower cover 64 both forms an inner-threaded hole 623, 643 on a center position thereof. In assembly, the long rod-like retaining assembly 68 is firstly accommodated within the channel 604 of said forming sleeve 66, and then the upper cover 62 covers the first opening 606 of forming sleeve 66 and the lower cover 64 covers the second opening 608 of the forming sleeve 66, wherein the long rod-like retaining assembly 68 employs threads on two ends thereof respectively to pass through the inner-threaded holes 623, 643 of the upper cover 62 and the lower cover 64, and then two nuts 682, 684 are respectively used to up and down screw the two opposite ends of the long rod-like retaining assembly 68 on the upper cover 62 and the lower cover 64. This makes the upper cover 62, the lower cover 64 and the forming sleeve 68 triple firmly combined in integral and thereby providing the floor through-passage molding apparatus 60 with a firm connectivity in a vertical direction.

Said constricting module 70 can use the same structure as any one of the constricting modules 110, 210, 310 and 410 shown in FIGS. 3 b, 4 b 5 b and 6 b, and thereby provide the floor through-passage molding apparatus with a firm connectivity in a horizontal direction. Additionally, any one portion of the constricting module, such as a first connection terminal and/or a second connection terminal of the elongated curved body or the short curved body, can be soldered together with the steel bars 164 of the concrete floor 160 beside the outer circumference surface 6020 of forming sleeve 66. After formation of the through passages 162 in the concrete floor 160, the upper cover 62, the lower cover 64 and the retaining assembly 68 are stripped and removed, except that the forming sleeve 66 and the constricting module 70 are reserved within the through passage 162 of the floor 160. By the constricting module 70, the firm connectivity between the forming sleeve 66 of the floor through-passage molding apparatus 60 and the concrete floor 160 can be greatly reinforced.

In inclusion, the constricting module provided by the present invention can greatly reinforce the entire structure of the floor through-passage molding apparatus such as a forming sleeve. Thus, during the process of forming the through passage in the concrete floor, a higher impact resistance capacity can be achieved, especially in a horizontal direction where the being-poured concrete impacts, and therefore can prevent the floor through-passage molding apparatus from deforming or slanting. 

1. A floor through-passage molding apparatus adapted for a floor construction having steel bars, comprising: a forming sleeve having a sleeve wall forming an outer circumference surface thereon; and wherein said floor through-passage molding apparatus further comprises a constricting module having: a plurality of separable curved bodies with identical or different radians formed thereon, each having a first connection terminal and a second connection terminal both which are respectively defined with at least one cavity; and a plenty pairs of fastener assemblies respectively jointed to the cavities of said plurality of curved bodies in a matter that the second connection terminal of each of the curved bodies is connected with the first connection terminal of its neighbor curved body to cascade said plurality of curved bodies in an annular arrangement along the outer circumference surface of said sleeve wall.
 2. A floor through-passage molding apparatus adapted for a floor construction having steel bars, comprising: a forming sleeve having a sleeve wall forming an outer circumference surface thereon; and wherein said floor through-passage molding apparatus further comprises: a constricting module having an elongated curved body disposed on said sleeve wall, a first connection terminal and a second connection terminal respectively positioned on two opposite ends of said elongated curved body, wherein said elongated curved body radially supports the outer circumference surface of the sleeve wall by a connection between said first connection terminal and second connection terminal.
 3. The floor through-passage molding apparatus according to said claim 1, wherein said constricting module further comprises at least one pair of fastener assembly, the first connection terminal and the second connection terminal, wherein the first connection terminal and second connection terminal are respectively defined with at least one cavity and connected with each other by jointing said pair of fastener assembly to said at least one cavity.
 4. The floor through-passage molding apparatus according to said claim 1, wherein said elongated curved body, the first connection terminal and the second connection terminal are formed in integral, wherein said first connection terminal and second connection terminal are radially connected with the two opposite ends of said elongated curved body.
 5. The floor through-passage molding apparatus according to said claim 1, wherein said elongated curved body further has at least one third connection terminal for connecting to the steel bars of the floor construction.
 6. The floor through-passage molding apparatus according to said claim 1, wherein said elongated curved body further has at least one fourth connection terminal for connecting to the sleeve wall of a forming sleeve.
 7. The floor through-passage molding apparatus according to said claim 1, wherein said elongated curved body further comprises: a plurality of separable short curved bodies assembled in the annular arrangement along the outer circumference surface of said sleeve wall, each having said first connection terminal and second connection terminal, wherein the second connection terminal of each of the short curved bodies is connected with the first connection terminal of its neighbor short curved body to cascade said plurality of short curved bodies into said elongated curved body.
 8. The floor through-passage molding apparatus according to said claim 7, wherein said elongated curved body further comprises: a plural pairs of fastener assemblies jointed to at least one cavity which is respectively formed on the first connection terminals and second connection terminals of the short curved bodies, so as to cascade said plurality of short curved bodies into said elongated curved body.
 9. The floor through-passage molding apparatus according to said claim 7, wherein said short curved bodies are made of a deformable elastomer.
 10. The floor through-passage molding apparatus according to said claim 7, wherein said short curved bodies are made of a metallic material.
 11. The floor through-passage molding apparatus according to said claim 7, wherein a radian of each of the short curved bodies is set between π and 2π/3.
 12. The floor through-passage molding apparatus according to said claim 9, wherein a radian of said elongated curved body is larger than a radian of each of the short curved bodies but identical to or smaller than a radian of the outer circumference surface of the sleeve wall.
 13. A constricting module adapted for a floor through-passage molding apparatus of a floor construction, wherein said constricting module comprises: an elongated curved body; and a first connection terminal and a second connection terminal respectively positioned on two opposite ends of said elongated curved body, wherein said elongated curved body has an adjustable radian so that the first connection terminal the second connection terminal of said elongated curved body are connected together by extending said adjustable radian.
 14. The constricting module according to said claim 13, wherein said constricting module further comprises a pair of fastener assembly, the first connection terminal and the second connection terminal, wherein the first connection terminal and the second connection terminal are respectively defined with at least one cavity and connected with each other by jointing said pair of fastener assembly to said at least one cavity.
 15. The constricting module according to said claim 13, wherein said elongated curved body further comprises: a plurality of separable short curved bodies cascaded one by one along said adjustable radian and each having said first connection terminal and second connection terminal, wherein the second connection terminal of each of the short curved bodies is connected with the first connection terminal of its neighbor short curved body to cascade said plurality of short curved bodies into said elongated curved body.
 16. The constricting module according to said claim 15, wherein said elongated curved body further comprises: a plural pairs of fastener assemblies jointed to at least one cavity which is respectively formed on the first connection terminals and the second connection terminals of the short curved bodies, so as to cascade said plurality of short curved bodies into said elongated curved body.
 17. The constricting module according to said claim 15, wherein said short curved bodies are made of a deformable elastomer.
 18. The constricting module according to said claim 15, wherein said short curved bodies are made of a metallic material.
 19. The constricting module according to said claim 17, wherein the radian of said elongated curved body is larger than a radian of each of the short curved bodies but identical to or smaller than a radian of the outer circumference surface of the sleeve wall. 